This is awesome--I love the smooth transitions in the Requiem. And Castle has such a lovely build from contemplative (waiting) ramping up to intense and suspenseful. The Rattrapan Screams gives the enemy a sense of fun too, with the claps. Maybe it conjures the image of a swarm of minions coming after you too? The Eternity Engine is such a cool concept, and the sudden key shifts make me wonder if there's more to this story. The winding down of the ticking is so chilling too.